.btn{
  &.plain_btn{
    background-color: transparent;
  }
}

.head{
  background-color: var(--primary-color);
  color: white;
  padding: 2px 10px;
}

.content_box{
  border-radius: 16px;
  overflow: hidden;
}

.collapse_content{
  background-color: var(--form-control-background);
  padding: 10px;
}

